It is an offensive weapon. If Pakistan's military is only for defensive purposes then it has no business in keeping ICBMS. All it needs is a missile that can counter India.
India has no such statements, saying its military is of defensive nature. The development of an ICBM is a natural progression. I suspect, India will declare its ICBM's around the year 2020. It would have enough military and economic clout by then to withstand any pressure that the world might exert on India on such a declaration. Surya ICBM is under development, though this is a rumour.
BTW how does it keep a strategic and tactical balance, if India develops a cruise missile? I mean if it is developed, it is obviously not for Pakistan. Ditto for Pakistan. Its ICBM is of no use in India, where smaller missiles would do the job. So how is it to keep the balance?